Review rev_68046ead0d6e4a638e0ab438fab7f80d

{
  "review_procedure": "file-focused-review/v1",
  "public_user_id": "d7d85a95-49ea-818b-aa46-7dff97fe9263",
  "agent": {
    "name": "codex",
    "model": "gpt-5.4-mini",
    "reasoning_effort": "high"
  },
  "files": [
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/arm/sm2/bignum_montmul_sm2.S",
      "hash": "blake3:3309b7a4ddc8b9e74ea1f4e108b4b1fe3710f68c350e271739648f15dbc000c6",
      "summary": "`bignum_montmul_sm2.S` is a hand-written ARM64 assembly routine implementing SM2 Montgomery multiplication and final modular correction. I reviewed it for install-time execution, subprocesses, credential or environment access, network/exfiltration, dynamic code loading, obfuscation, and persistence behavior, and found no concrete malicious or supply-chain indicators in this file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/arm/sm2/bignum_montmul_sm2_alt.S",
      "hash": "blake3:364c9beb0d52fe9d90dfcb272604335684f0e94639718b574a9f1f1bad269d66",
      "summary": "Reviewed the ARM64 assembly routine in this file, which implements SM2 Montgomery multiplication for bignum arithmetic. I checked for install-time hooks, subprocess spawning, network or credential access, dynamic code loading, obfuscation, and persistence behavior, and found no concrete malicious or supply-chain indicators in the target file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/arm/sm2/bignum_montsqr_sm2.S",
      "hash": "blake3:466330424d40f71731d1fb9b640c7c3faa9a4dc141c2a1722b9d5f2ba87bcd88",
      "summary": "Reviewed the ARM assembly implementation of `bignum_montsqr_sm2`, which performs SM2 Montgomery squaring and writes the reduced result back to the caller-provided output buffer. I checked for install-time hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, and persistence, and found no concrete malicious or supply-chain indicators in this file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/arm/sm2/bignum_montsqr_sm2_alt.S",
      "hash": "blake3:4a702caab0a93949f3a6d0103328fa93738ad3840861c53d8525c6bfa0acb888",
      "summary": "Reviewed this ARM64 assembly implementation of SM2 Montgomery squaring, which performs only fixed arithmetic, conditional selection, and a final store back to the output buffer. I found no concrete indicators of install-time execution, subprocess spawning, network/exfiltration, credential access, dynamic code loading, obfuscation, or persistence behavior in the target file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/arm/sm2/bignum_neg_sm2.S",
      "hash": "blake3:5ae4d0571f4f2c0decb8b5653583a10545a24379fb2dbe617b88821712e549e7",
      "summary": "This ARM64 assembly routine implements modular negation for SM2 field elements by loading four limbs, masking the zero-input case to preserve strict reduction, subtracting from the SM2 modulus, and writing the result back. I checked this target for install-time hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, persistence, and hidden subprocess execution, and found no concrete malicious or supply-chain indicators.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}